Count Restart Operation After Error Clearance - Omron DEVICENET#05-2003 Operation Manual

Examples of Counter Unit Operation
3-1-4

Count Restart Operation after Error Clearance

10601 23204
10105
35208
23300
23300 10115
If power supply from the I/O Unit interface to the Counter Unit is interrupted,
the Counter Unit will stop count operation. It will be necessary to restart the
count operation. When the Counter Unit is restarted, all settings, such as the
setting values, the present value, and the count mode will be cleared. These
settings must be reset. By adding the following program to the program
described in the previous section, 3-1-3 Counter Setting and Execution, the
settings will be reset automatically when the Counter Unit is restarted, and it
will be possible to resume count operations. An example of the program used,
along with an explanation of that program appears below. For details about
the status area of the Master Unit, refer to DeviceNet Operation Manual
(W267).
35115
10114
If any of the following occur after the Counter Unit setting
and start-up have been completed (and 23204 is ON),
the Step Advance Bit 23300 turns ON in order to reset
23203
the settings for the Counter Unit.
The Communications Unit Bit (node number 01 =
10601) for the Master Unit normal Slave information
area is OFF (error).
Bit 5 (10105) of the Master Status Area 1 is ON
(transmission error in the DeviceNet).
The Counter Unit Bit (#0 = 35208) for the error I/O Unit
address in the I/O Unit Interface Status Area is ON
(error).
MOV(21)
#0001
When the Step Advance Flag 23300 turns ON for reset-
232
ting, if all of the following conditions are satisfied, the
Counter Unit will start up normally and communications
will be possible. Therefore, the Step Advance Flag 23200
will turn ON. The previously described setting and execu-
tion program will be re-executed.
Bit 15 (10115) of the Master Status Area is ON (Device
Net remote I/O communications are operating).
Bit 14 (10114) of the Master Status Area 1 is OFF
(Error/Communications Stopped Flag).
Bit 15 (35115) of I/O Unit connection information in the
I/O Unit Interface Status Area is ON (I/O refresh in prog-
ress).
Section 3-1
33